THE PREPARATION AND EVALUATION OF ULTRAMICRO-SENSOR MODIFIED POLYMETHACRYLOYLACETC

超微传感器改性聚甲基丙烯酰乙酸的制备及评价

• 批准号: 09640730
• 负责人: MOTONAKA Junko
• 金额: $ 1.73万
• 依托单位: The University of Tokushima
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09640730/
• 关键词: Ultramicro-electrode; Determination of metal ions; Polymethacryloylacetone; 銅-鉛イオン混合物定量; 微量金属測定; 鉄; 銅; 鉛; モリブデン

A porous ultramicro-electrode with immobilized polymethacryloylacetone(PMAA) was developed for measuring metal ions. A porous carbon material was packed into the tip of the platinum micro-electrode with a cavity at the top. The porous ultramicro-electrode was dipped in the coating tetrahydrofuran solution with PMAA and di-2-ethylhexyl phthalate and dried overnight at room temperature. The relationship between the metal ion concentrations and oxidation peak current were examined under the optimum conditions. A linear relationship was obtained in the range of 0.01 mM - 1 mM iron ion. The calibration curve could be represented by the equation Y = 2.42X -0.414, where Y is the oxidation peak current in nA and X is the iron ion concentration in mM.The regression coefficient was 0.999. By use of this electrode, Cu(II), Pb(II), and Mo(V) ions could also be deternined. The simultaneous determination was possible only for the mixture of Cu(II) and Pb(II) ions because the optimal conditions for these ions were similar to each other. The electrode was stored in a pH 6.0 phosphate buffer solution at room temperature. Analytical values determined with the modified electrode was constant for at least 3 months

研制了一种用于金属离子测定的固定化聚甲基丙烯酰丙酮（PMAA）多孔超微电极。将多孔碳材料填充到顶部具有空腔的铂微电极的尖端中。将多孔超微电极浸入具有PMAA和邻苯二甲酸二-2-乙基己酯的四氢呋喃涂层溶液中，并在室温下干燥过夜。在最佳条件下考察了金属离子浓度与氧化峰电流的关系。铁离子浓度在0.01 mM - 1 mM范围内呈线性关系。校准曲线可用方程Y = 2.42X-0.414表示，其中Y是以nA为单位的氧化峰电流，X是以mM为单位的铁离子浓度。回归系数为0.999。用此电极还可测定Cu（Ⅱ）、Pb（Ⅱ）和Mo（Ⅴ）离子。同时测定是可能的，只有铜（II）和铅（II）离子的混合物，因为这些离子的最佳条件是彼此相似的。将电极在室温下储存在pH 6.0的磷酸盐缓冲溶液中。用该修饰电极测定的分析值在至少3个月内保持恒定

项目成果

Junko Motonaka: "Utitization of Diketone Polymer Membrane for Micro-Senser" Reports on Progress in Polymer Physics in Japan. 40. 427-428 (1997)

Junko Motonaka：“二酮聚合物膜用于微传感器的利用”报道日本聚合物物理学的进展。

Junko Motomaka: "Utilitzation of Diketone Polymer Membiane for Micro-sencer" Reports on Progress in Polymerphysics in Japan. 40. 427-428 (1997)

Junko Motomaka：“二酮聚合物膜用于微传感器的利用”报告日本高分子物理学进展。

Junko Motonaka: "Utilization of Diketone Polymer Membrane for Micro-sensor" Reports on Progress in Polymer Physics in Japan. Vol.40. 427-428 (1997)

Junko Motonaka：《二酮聚合物膜用于微传感器》报道日本高分子物理进展。